Предмет: Алгебра, автор: linaalinka2001puchko

Комплексные числа решите уравнение х^2+2х+1=0

Ответы

Автор ответа: Elo4kaw

Надо разложить на множители:

Приложения:

linaalinka2001puchko: черт, как вы это делаете??

Автор ответа: vkusnashka6

х^2 +2x +1=0

a=1,b=2,c=1.

Далее находим дискриминант по формуле D= b^2 -4ac

D= 2^2 -4*1*1=4-4=0

дискриминант равен 0,значит тут один корень,вычисляем по формуле x=-b/2a

x= -2/2=-1

Ответ х=-1

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